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/*
* $Id: sram.c,v 1.10 2004/01/30 07:09:56 troth Exp $
*
****************************************************************************
*
* simulavr - A simulator for the Atmel AVR family of microcontrollers.
* Copyright (C) 2001, 2002, 2003, 2004 Theodore A. Roth
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
****************************************************************************
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "avrerror.h"
#include "avrmalloc.h"
#include "avrclass.h"
#include "utils.h"
#include "callback.h"
#include "op_names.h"
#include "storage.h"
#include "flash.h"
#include "vdevs.h"
#include "memory.h"
#include "stack.h"
#include "register.h"
#include "sram.h"
#include "eeprom.h"
#include "timers.h"
#include "ports.h"
#include "avrcore.h"
#include "display.h"
static uint8_t sram_read (VDevice *dev, int addr);
static void sram_write (VDevice *dev, int addr, uint8_t val);
static void sram_reset (VDevice *dev);
SRAM *
sram_new (int base, int size)
{
SRAM *sram;
sram = avr_new (SRAM, 1);
sram_construct (sram, base, size);
class_overload_destroy ((AvrClass *)sram, sram_destroy);
return sram;
}
void
sram_construct (SRAM *sram, int base, int size)
{
if (sram == NULL)
avr_error ("passed null ptr");
sram->stor = storage_new (base, size);
vdev_construct ((VDevice *)sram, sram_read, sram_write, sram_reset,
vdev_def_AddAddr);
}
void
sram_destroy (void *sram)
{
SRAM *_sram = (SRAM *)sram;
if (sram == NULL)
return;
class_unref ((AvrClass *)_sram->stor);
vdev_destroy (sram);
}
int
sram_get_size (SRAM *sram)
{
return storage_get_size (sram->stor);
}
int
sram_get_base (SRAM *sram)
{
return storage_get_base (sram->stor);
}
static uint8_t
sram_read (VDevice *dev, int addr)
{
SRAM *sram = (SRAM *)dev;
return storage_readb (sram->stor, addr);
}
static void
sram_write (VDevice *dev, int addr, uint8_t val)
{
SRAM *sram = (SRAM *)dev;
display_sram (addr, 1, &val);
storage_writeb (sram->stor, addr, val);
}
static void
sram_reset (VDevice *dev)
{
return; /* FIXME: should the array be cleared? */
}
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